26th July 2024

You are reviewing a patient in the GP clinic who has presented with tiredness

You are reviewing a patient in the GP clinic who has presented with tiredness. He has a background of chronic myeloid leukaemia, for which he received an allogeneic stem cell transplant two years ago and has remained in remission since.

Further history elicits that he has put on weight unintentionally and is feeling particularly cold compared to those around him. On examination you note dry, scaly skin and loss of the lateral part of his eyebrows. What investigation would help identify the underlying diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.